@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
    
    .nav-menu {
        gap: 24px;
    }
    
    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
}

@media (max-width: 992px) {
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 30px;
    }
    
    .header .container {
        height: 70px;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        border-bottom: 1px solid var(--border-color);
    }
    
    .nav-menu li:last-child {
        border-bottom: none;
    }
    
    .nav-link {
        display: block;
        padding: 15px 0;
    }
    
    .nav-link::after {
        display: none;
    }
    
    /* 移动端下拉菜单：取消绝对定位，内联显示 */
    .nav-submenu {
        position: static;
        background: transparent;
        box-shadow: none;
        border-radius: 0;
        padding: 0 0 0 16px;
        opacity: 1;
        visibility: visible;
        transform: none;
        min-width: auto;
    }
    .nav-submenu a {
        padding: 10px 20px;
        font-size: 14px;
    }
    
    .header-cta .btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-features {
        flex-wrap: wrap;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .section-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .page-banner {
        padding: 100px 0 40px;
    }
    
    .page-banner h1 {
        font-size: 28px;
    }
    
    .page-banner p {
        font-size: 16px;
    }
    
    .hero {
        padding: 100px 0 60px;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 28px;
        margin-bottom: 16px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        margin-bottom: 30px;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-feature {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 14px;
    }
    
    .pain-points-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .pain-point-card {
        padding: 24px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }
    
    .stat-item {
        padding: 24px 16px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .footer-logo {
        justify-content: center;
    }
    
    .footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-qrcode {
        margin: 0 auto;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .floating-contact {
        right: 16px;
        bottom: 80px;
    }
    
    .floating-btn {
        width: 44px;
        height: 44px;
        font-size: 18px;
    }
    
    .solutions-tabs {
        flex-direction: column;
        gap: 10px;
    }
    
    .solution-tab {
        width: 100%;
        text-align: center;
    }
    
    .case-filter {
        flex-direction: column;
        align-items: center;
    }
    
    .about-intro {
        flex-direction: column;
    }
    
    .about-intro-image {
        order: -1;
    }
    
    .timeline {
        padding-left: 30px;
    }
    
    .timeline::before {
        left: 10px;
    }
    
    .timeline-item::before {
        left: -26px;
        width: 12px;
        height: 12px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 30px 20px;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 24px;
    }
    
    .hero-feature {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .hero-feature i {
        font-size: 14px;
    }
    
    .stat-number {
        font-size: 28px;
    }
    
    .stat-label {
        font-size: 13px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .card-body {
        padding: 16px;
    }
    
    .card-title {
        font-size: 18px;
    }
    
    .logo-text {
        font-size: 16px;
    }
    
    .logo-text span {
        display: none;
    }
    
    .icon-box {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
}

@media (hover: none) {
    .card:hover {
        transform: none;
    }
    
    .card:hover .card-image img {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
    
    .floating-btn:hover {
        transform: none;
    }
}